<div style="display: none">
    {{ form_widget(orderDetailForm.new) }}
    {{ form_widget(orderDetailForm.Product) }}
    {{ form_widget(orderDetailForm.ProductClass) }}
    {{ form_widget(orderDetailForm.price) }}
    {{ form_widget(orderDetailForm.quantity, {'type': 'hidden'}) }}
    {{ form_widget(orderDetailForm.tax_rate, {'type': 'hidden'}) }}
</div>